Edited by Amber Leung, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Fritz Flohr Reynolds, some rights reserved (CC BY-SA)
- 2. (c) bbelcher, some rights reserved (CC BY-NC), uploaded by bbelcher
- 3. (c) Laura Clark, some rights reserved (CC BY), uploaded by Laura Clark
- 4. (c) Don Verser, some rights reserved (CC BY-NC), uploaded by Don Verser
- 5. (c) Eric Keith, some rights reserved (CC BY-NC), uploaded by Eric Keith
- 6. (c) jefferykarafa, some rights reserved (CC BY-NC), uploaded by jefferykarafa
- 7. (c) Jim West, some rights reserved (CC BY-NC), uploaded by Jim West
- 8. (c) luisdlr, some rights reserved (CC BY-NC)
- 9. (c) Anna Livia Singer, some rights reserved (CC BY-NC-ND), uploaded by Anna Livia Singer
- 10. (c) Ashley M Bradford, some rights reserved (CC BY-NC), uploaded by Ashley M Bradford
- 11. (c) ellen hildebrandt, some rights reserved (CC BY-NC), uploaded by ellen hildebrandt
- 12. (c) Tony Rodd, some rights reserved (CC BY-NC-SA)
- 13. (c) dogtooth77, some rights reserved (CC BY-NC-SA)
- 14. (c) J.R.M., some rights reserved (CC BY-NC-SA)
- 15. (c) Bob O'Kennon, some rights reserved (CC BY-NC), uploaded by Bob O'Kennon
- 16. (c) batgirl2, some rights reserved (CC BY-NC)
- 17. (c) Linda Jo Conn, some rights reserved (CC BY-NC), uploaded by Linda Jo Conn
- 18. (c) Matthew Herron, some rights reserved (CC BY-NC), uploaded by Matthew Herron
- 19. (c) Evan M. Raskin, some rights reserved (CC BY), uploaded by Evan M. Raskin
- 20. (c) Bob Peterson, some rights reserved (CC BY-SA)
- 21. (c) Dolly, some rights reserved (CC BY-NC-SA), uploaded by Dolly
- 22. (c) Rosa Say, some rights reserved (CC BY-NC-ND)
- 23. (c) Chris Poling, some rights reserved (CC BY-NC), uploaded by Chris Poling
- 24. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
- 25. (c) James Mickley, some rights reserved (CC BY-NC), uploaded by James Mickley
- 26. (c) MAC Camacho-Viera, some rights reserved (CC BY-NC), uploaded by MAC Camacho-Viera
- 27. (c) Shelly Wu, some rights reserved (CC BY-NC), uploaded by Shelly Wu
- 28. (c) Jed Aplaca, some rights reserved (CC BY-NC), uploaded by Jed Aplaca
- 29. (c) Mary Keim, some rights reserved (CC BY-NC-SA)
- 30. (c) Frank Mayfield, some rights reserved (CC BY-SA)
- 31. (c) Jenny Smith, some rights reserved (CC BY-NC), uploaded by Jenny Smith
- 32. (c) Kurt Nordstrom, some rights reserved (CC BY)
- 33. (c) krancmm, some rights reserved (CC BY-NC), uploaded by krancmm
- 34. (c) Carol Foil, some rights reserved (CC BY-NC-ND)
- 35. (c) Erik Danielsen, some rights reserved (CC BY-NC), uploaded by Erik Danielsen
- 36. (c) amy_buthod, some rights reserved (CC BY-NC-SA)
- 37. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)
- 38. (c) Bill Wright, some rights reserved (CC BY-NC), uploaded by Bill Wright
- 39. (c) veravilla, some rights reserved (CC BY-NC), uploaded by veravilla
- 40. (c) 2009 Barry Rice, some rights reserved (CC BY-NC-SA)
- 41. (c) mountainkat14, some rights reserved (CC BY-NC), uploaded by mountainkat14
- 42. (c) Anita Gould, some rights reserved (CC BY-NC)
- 43. (c) Laura Kimberly, some rights reserved (CC BY-NC), uploaded by Laura Kimberly
- 44. (c) Erin Faulkner, some rights reserved (CC BY-NC), uploaded by Erin Faulkner
- 45. (c) Corey Lange, some rights reserved (CC BY-NC), uploaded by Corey Lange
- 46. (c) Andy Newman, some rights reserved (CC BY-NC), uploaded by Andy Newman
- 47. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
- 48. no rights reserved, uploaded by Alan Weakley
- 49. (c) 潘立傑 LiChieh Pan, some rights reserved (CC BY-NC-SA)
- 50. (c) 2002 Bart and Susan Eisenberg, some rights reserved (CC BY)
- 51. (c) rachelgreenbelt, some rights reserved (CC BY-NC-SA)
- 52. (c) Eleanor, some rights reserved (CC BY-NC)
- 53. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
- 54. (c) grbfrog, some rights reserved (CC BY-NC), uploaded by grbfrog
- 55. (c) 2005 Luigi Rignanese, some rights reserved (CC BY-NC)
- 56. (c) Viki, some rights reserved (CC BY-NC-SA)
- 57. (c) Lauren Baur, some rights reserved (CC BY-NC-ND), uploaded by Lauren Baur
- 58. (c) Fritz Flohr Reynolds, some rights reserved (CC BY-NC)
- 59. (c) Earl McGehee, some rights reserved (CC BY-NC-ND)
- 60. (c) Suzette Rogers, some rights reserved (CC BY-NC), uploaded by Suzette Rogers
- 61. (c) timarcus, some rights reserved (CC BY-NC), uploaded by timarcus
- 62. (c) Wendell Smith, some rights reserved (CC BY)
- 63. (c) Victor Fazio, some rights reserved (CC BY-NC-SA)
- 64. (c) Jim Varnum, some rights reserved (CC BY-NC), uploaded by Jim Varnum
- 65. (c) Jasmine, some rights reserved (CC BY-NC), uploaded by Jasmine
- 66. (c) zen Sutherland, some rights reserved (CC BY-NC-SA)
- 67. (c) PINKÉ, some rights reserved (CC BY-NC)
- 68. (c) National Museum of Natural History Image Collection, some rights reserved (CC BY-NC-SA)
- 69. (c) Judith Ellen Lopez, some rights reserved (CC BY-NC-SA)
- 70. (c) marypearlivy, some rights reserved (CC BY-NC)
- 71. (c) Photo by David J. Stang, some rights reserved (CC BY-SA)
- 72. (c) Julie Pearce, some rights reserved (CC BY-NC), uploaded by Julie Pearce
- 73. (c) daryl_mitchell, some rights reserved (CC BY-SA)
- 74. (c) Vicki DeLoach, some rights reserved (CC BY-NC-ND)
- 75. (c) Daniel Folds, some rights reserved (CC BY-NC), uploaded by Daniel Folds
- 76. (c) Lori Anne, some rights reserved (CC BY-NC), uploaded by Lori Anne
- 77. (c) Kathy McAleese, some rights reserved (CC BY-NC-ND), uploaded by Kathy McAleese